Solids, Liquids, and Gases Citations

http://plato.stanford.edu/entries/boyle/

http://www.britannica.com/EBchecked/topic/227390/Joseph-Louis-Gay-Lussac

http://www.chemistryexplained.com/Ce-Co/Charles-Jacques.html#b

http://pubs.acs.org/doi/abs/10.1021/ed033p299

http://chemed.chem.purdue.edu/genchem/history/graham.html

http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001151/

http://www.smithsonianmag.com/arts-culture/brief-history-of-chocolate.html

http://www.howstuffworks.com/lcd.htm